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Originally Posted by XcelTech

I feel that if I have to replace 2 fan motors, 3 sensors, and a plastic fan blade in one year on a 5 year old unit it is a piece of junk. Which is what I usually find on Carrier Air cooled chillers. Not to mention having to have a 10 page error code dictionary to find out what T331 means. Can't the screen just say Liquid line sensor failure.

10 years of working with the silly things has taught me a couple of things. 1) for some reason, the fan motors are VERY sensitive to any kind of power problems, if the motormaster fans are happy but the others going, that would be my main suspect. 2) The plastic blades are expensive but they have changed the design recently that's supposed to be an improvement they say. 3) The TouchPilot is one of the dumbest things Carrier ever put on a chiller, for which we have Carrier France to thank as they developed it.

Oh, and on any other chiller that has the ComfortLink interface instead, were you aware that if you're looking at the alarm number on the screen and hit both the "ESC" and "ENTER" buttons at the same time it will give you the full text of the alarm.

where are these units located.Invironment wise?

Many upgrades on the 30XA, RB, and RAP machines. Check you fan propellers if you see them turning white change them out.

I have 2 30GX screw chillers and yes the fan motors go very often. At least 2 every summer on each chiller. Look at the size of the fan blade, its huge and i doubt balanced very well. Those blades chew up those motors.


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Thanks for the reply,

Wow that is pretty extreme. I was hoping to hear something a little better.

If that seems to be working I guess thats my next option. I am going to try to start a new post to see if I can get any responses as well. I cant believe we are the only 2 having issues.

Thanks

We called in a motor rebuild specialist. The bearings were the failure. All the grease was out of the bearing. We now buy a new condenser fan motor and send it to be rebuilt with sealed bearings. $800 for the motor $100 for the rebuild. We are now doing this to see how it works out.

Wow

This is an old one.

I saw noone had responded to you but After 7 years with this 30RB and 10 motors I have the same issue. I lost 4 this summer and the shafts are sloppy not just a little either.

Did you ever happen to get an answer?

A friend of mine that works for Carrier says that this isnt an issue that he is aware of but it sure is for me and not just this chiller. We have 2 others. All I can think is the blades

Just curious if you had heard any more or figured out a remedy.

Thanks

I feel that if I have to replace 2 fan motors, 3 sensors, and a plastic fan blade in one year on a 5 year old unit it is a piece of junk. Which is what I usually find on Carrier Air cooled chillers. Not to mention having to have a 10 page error code dictionary to find out what T331 means. Can't the screen just say Liquid line sensor failure.

condensor motors

Has any one experienced condensor fan motor failures on these 30rba units? We have a 250 and a 125 and have lost about 12 motors. Failure mode is always bearing failure which then causes rotor to stator grounding. Motors cannot be greased and have no thrust bearings. Any replys would be helpfull.
Thanks. Mike

chucks of ice/snow causing problem.

still not eein it???????????

Originally Posted by Gibbo

If you look at the 2nd last photograph there is clearly some sort of enclosure behind the fan cowlings.

If you look at the 2nd last photograph there is clearly some sort of enclosure behind the fan cowlings.

no they do not have enclosures. they look pretty new, looks like nicro channel cond coils!!
Most likely ICE!!!
lots of ICE! lol

Originally Posted by Gibbo

It looks as if the fan motor may be twisting trying to overcome static pressure. The photo showing the fan sections is that some sort of enclosure around the top of the unit.

It looks as if the fan motor may be twisting trying to overcome static pressure. The photo showing the fan sections is that some sort of enclosure around the top of the unit.

wow!!!!!!!!!!!!!!!!!!1
i am not a blue oval fan!
that being said!
I have dozens of 30 series chillers.
30rb, gxr 30 anything?
screws, recips and scrolls.
I really have not had many problems????

Maybe this one was built on a friday??

I don't like the idea of using a cast metal casing and mounting lugs on a solid mount. Why reinvent the wheel and change the motor mount-----------Uhmmm Do you have to buy that motor through Carrier?

[QUOTE=Slip Stream;6212702]How did that happen? Did the fan catch edge and rip itself off?[/QUOTE

Is it possible that snow or ice built up on the fans . They look like they started up off ballance some how .

Originally Posted by ImpellerNut

I think you can blame customer ignorance and manufacturers 'race to the bottom'.

2 fans have Sieman's VFD's on them controlled by the Fan boards. These are not the fans that failed.

Geez how ignorant are your customers? They bought a chiller with GE motors on them . They are pretty dumb.

I think you can blame customer ignorance and manufacturers 'race to the bottom'.

2 fans have Sieman's VFD's on them controlled by the Fan boards. These are not the fans that failed.

Well partly you can blame the high cost of raw materials that has cause manufacturers to look for other sources of cheaper and lighter materials. Does it have motor masters on it?